06-11-2014, 12:13 PM
Abstracts: Electrical discharge machining is one of the most popular non-conventional machining processes use for creating complex shapes within the parts and assemblies in the manufacturing industries. When it is either impossible or very costly to do machining of advance materials and complex shapes by other processes, EDM provides a very popular option as far as conductive work piece material are concerned. However the technological capability of the process of has limitations such as poor surface finish and costly electrode design. To overcome some of this limitation and to enhance the surface finish of EDM process. The most commonly used electrode materials are copper. It has been observed that copper electrode allow use of higher current providing for large material removal rate. This fact cause copper electrode to be favored for rough machining. Copper electrodes provides better results in terms of surface finish for this reason copper electrode are preferred. The purpose of this research is to examine both the main effects and the interacting effects of EDM input variables (gap current, gap voltage and. Cross sectional area of cut) on the response variables of surface finish, and also to determine whether or not the machining current affects surface finish. All conclusions will be based upon the results of the experimental data.